| چکیده انگلیسی مقاله |
Background and Objective: Street dust, as both a source and sink of pollutants, is considered a reliable indicator for assessing atmospheric pollution. Therefore, this study aimed to evaluate the pollution levels and environmental toxicity of arsenic (As), zinc (Zn), lead (Pb), cadmium (Cd), and copper (Cu) in street dust in the city of Hamedan in 2023.
Materials and Methods: A total of 108 street dust samples were collected from 12 sampling sites, including residential, commercial, and industrial regions, during the spring, summer, and fall seasons. The concentrations of the analyzed elements were determined using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Additionally, pollution indices (PI), integrated pollution index (IPI), and mean effects range median quotient (mERM-Q) were calculated.
Results: The highest average concentrations of the analyzed elements in street dust were observed in the industrial regions and the fall season for As (5.79 mg/kg), Zn (405 mg/kg), Cd (0.758 mg/kg), and Cu (84.8 mg/kg). For Pb, the highest average concentration (110 mg/kg) was found in commercial regions during the fall season. PI values indicated pollution levels for As, Zn, Pb, Cd, and Cu ranging from "moderate" to "very high." The average IPI values varied between 2.52 and 3.90, reflecting "high" pollution conditions across all sampling sites and seasons. Furthermore, the average mERM-Q values suggested a 21% probability of elemental toxicity in the analyzed street dust samples.
Conclusion: The findings highlight the influence of human activities, seasonal variations, and emission source fluctuations on street dust pollution. To mitigate pollution, it is recommended to identify and control the release sources of these elements, particularly in regions with higher pollution levels.
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| نویسندگان مقاله |
سیده شعله حسینی | Seyedeh Sholeh Hosseini
Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
گروه علوم و مهندسی محیط زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
بهاره لرستانی | Bahareh Lorestani
Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
گروه علوم و مهندسی محیط زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
سهیل سبحان اردکانی | Soheil Sobhanardakani
Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
گروه علوم و مهندسی محیط زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
مهرداد چراغی | Mehrdad Cheraghi
Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
گروه علوم و مهندسی محیط زیست، دانشکده علوم پایه، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران
سحر رضایان | Sahar Rezaian
Department of the Environment, Faculty of Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran
گروه محیط زیست، دانشکده فنی و مهندسی، واحد شاهرود، دانشگاه آزاد اسلامی، شاهرود، ایران
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